This is a Mantis MF-4CM Chaos 2 Knife with Sheath. This tool is constructed of ¼” thick laser cut 154CM stainless. A SWAT team member used it as a step ladder as he stabbed it sideways into a power pole, then launched himself over a fence. As with all Chaos models, the blocks of G-10 are secured directly into the tang with 440 stainless screws.